- Find S20 for each arithmetic series listed below. A) 70 + 66 + 62 + 58 ...

B) 3 + 9 + 15 + 21...

C) 9 + 16 + 23 ...

D) 3 + 2.5 + 2 + 1.5 ...

Determine S20 for the arithmetic series with properties listed below. A) a = 2x and d = 5x ,

B) t14= 46, and t19= 100